Welcome to the AG club! That is a great setup! You may decide you don't need to "upgrade", and I can assure you, you can make as good a beer with twin Rubbermaids as you can with a BM. Plus, the money saved in gear can go towards more ingredients!

I have a Sabco and before I had it I had (have) basically the same Set up you ordered. Guess what? Same beer. I do have a lot more fun with the Sabco and hey, the wife made me get it. Actually she bought it for me as a gift but I made really good beer with the Rubbermaid coolers.